Is reverse swing lottery?

[Serpico]

How's it possible that same set of bowlers suddenly get reverse in the middle of the series, then can't get it enough for next two whole days and then get it again with second ball in next innings? Aren't kookaburras machine stitched and are supposed to be homogeneous? Why is there so much disparity from ball to ball? 

 

Right now the result of the series depends on which ball they pick in fourth innings. If its a dud, series is 0-0

[Jay]

33 minutes ago, Serpico said:

How's it possible that same set of bowlers suddenly get reverse in the middle of the series, then can't get it enough for next two whole days and then get it again with second ball in next innings? Aren't kookaburras machine stitched and are supposed to be homogeneous? Why is there so much disparity from ball to ball? 

 

Right now the result of the series depends on which ball they pick in fourth innings. If its a dud, series is 0-0

Paks use kookaburra ball? Lol. Now it makes sense why Aussies are doing well. Also Aussies are notorious for you all know what. So that's there. Needs to be investigated. Can't trust both tbh.